My web cam is listed in the model-matrix.txt file but it says not supported by loader. Is there any other way to load the firmware?

Extract from supported model file.

0x05CA 0x1870 R5U870 WDM HP Pavilion Webcam / HP Webcam 1000 VID/PID combination used by two distinct devices. dv1xxx appears to be
the less common of the two. The only way to check the difference is to
read the model number out via DMI. Not currently supported by loader.